Grigore T. Popa (sometimes Anglicized to Gregor T. Popa; May 1, 1892—July 18, 1948) was a Romanian physician and public intellectual. Of lowly peasant origin, he managed to obtain a university education and become a professor at two of his country's leading universities. An anatomist by specialty, Popa worked on popularizing modern science, reforming the medical and higher education systems, and, in war hospitals, as a decorated and publicly acclaimed practitioner.